On Wednesday morning I received an email from a reader who had been using Blubbr to create video quizzes for her students. Unfortunately, Blubbr seems to have gone offline so she was looking for a replacement. My immediate suggestion was to try Vizia. Vizia lets you build multiple choice questions into any YouTube video. The responses that you gather appear in either a Google Sheet or a CSV file to download. If you use the Google Sheet option you can then use Flubaroo to grade your students' responses to the quiz. In the video embedded below I provide a demonstration of how to use Vizia.